diff --git a/omeka-s-docker/Dockerfile b/omeka-s-docker/Dockerfile
index ed72dc4..6f240b0 100644
--- a/omeka-s-docker/Dockerfile
+++ b/omeka-s-docker/Dockerfile
@@ -11,7 +11,7 @@ RUN apk --update add ca-certificates
 #RUN echo "https://dl.bintray.com/php-alpine/v3.11/php-7.4" >> /etc/apk/repositories
 
 # Install packages
-RUN apk --no-cache add php82 php82-fpm php82-opcache php82-openssl php82-curl php82-pdo php82-pdo_mysql\
+RUN apk --no-cache add php82 php82-fpm php82-opcache php82-openssl php82-curl php82-pdo php82-pdo_mysql php82-session \
     nginx supervisor curl unzip
 
 # https://github.com/codecasts/php-alpine/issues/21